Just recently bought a evo 8 installed a boost gauge a few days ago and noticed the car is only boosting 12 lbs did a boost leak test found a leak fixed it took it for a drive still the same problem came home and did the boost leak test again with the same result no leaks but its still only boosting 12 lbs!!

any pointers????

 

check your lines...possibly prior owner had a bc and they slapped the lines incorrectly to finish. Happens all the time a search would have been nice ...sucker

 

thanks for the flame LOL

btw the search function on this forum sucks ***

 

No, it doesn't; it works great if you use it properly. We have solved this same problem for 1000 other noobs who bought used, previously-modded Evos. You need an MBC or purchase the stock OEM boost lines from Mitsubishiparts.net.

 

or you just installed the boost gauge wrong.. my friend had that problem with incorrect boost levels on a stock evo

 

well it doesnt help I don't have the stock hood so I don't have the vacuum diagram to check the lines but I'll continue to search and reads pages and pages of results with practically no help for my situation.

Thanks for the replies

 

No help my ***. Look for all the threads talking about 11psi or 12psi. 99% sure you don't need to see a diagram. This happens all the time where people mod their car, then put it back to "stock" but have no clue WTF they're doing and end up using non-OEM hoses for the stock boost system. When someone does that, you only see base wastegate pressure, which is 11-12psi, so you either need a device to manually control the boost or purchase the stock boost lines for $15. Very simple...

No, it's not the boost gauge installation. It wouldn't randomly read base wastegate pressure just because it's installed wrongly.

 

Okay so i was searching on MLR forums and found the answer there!!!

Is there anything I can use in place of the brass restrictor or do I have to order the OEM line

 

you must use OEM lines.
You can get them from mitsubishparts.net for about $25 shipeed.

Here is the part no. MN143555.
It comes with everything you need.
The hose has a T connector. One for the wastegate and one for the turbo outlet.
It's a real simple install but a ***** to do.
Get ready to get some of your knuckles all busted up....

 

Thanks

 

No problem.

I would strongly recommend you use some type of a glove (mechanic's glove) if you don't want to get your knuckles all bloody.
Once you try to take everything out to put the hose on you'll know what I am talking about.
There is very little room down there.

 

It's not a problem if you just remove the radiator fan. I do this each time, which makes it a breeze.